Improvement in rolled bars for nut-blanks



UNITED STATES PATENT OFFICE.

HENRY vv. OLIVER, JE., oF rITTsBUEG, PENNSYLVANIA.

Specification forming part of Letters Patent No. 1l 1,772, dated February 14, 1871.

To all whom, it may concern:

Bev it known that I, HENRY W. OLIVER, Jr., of Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in BOX-Nuts; and I do hereby declare the following to be a full, clear, and exact description thereof, reference being had to the accompanying drawings, making a part of this speciiication, in which- Figurel is a perspective View of a rolled bar from which my improved box-nut is made, and Fig. 2 is a like View of a finished nut.

Like letters of reference indicate like parts in each.

B0X-nuts used in the construction of wagonbeds, 85e., have heretofore been made by forging, which method of manufacture involves a great loss of time and labor, and the nuts so lproduced have a very poor finish. By my improvement IWill, from flat bar-iron, form nutblanks of a very superior nish, and at a much cheaper rate than they can be produced by forging.

To enable others skilled in the art to make my invention, Iwill describe its construction.

In a pair of cylindrical grooved rolls I Will turn flat bar-iron, a bar, a, having a raised flat surface on its upper face, extending longitudinally from end to end of the bar, and with both sides tapering or thinning down towardeach edge b, as shown in Fig. 1. The

bar thus made is then sawed or otherwise out transversely, in the direction of the dotted line in Fig. 1, into as many blanks as it Will furnish of the desired Width for the nut-blank.

These blanks are then punched through the raised portion, midway from either end, to form the eye d of the nut, which may be tapped with a screwthread, as desired. Smaller holes are .also punched near each end of the nut-blanks,

as at e. By this operation a long bar of iron being rolled of suitable width and shape the box-nut blanks are obtained very rapidly, and

of superior quality and nish, by merely cutting up the bar into short pieces.

I do not confine myself vto the exact shape of bar'or blank shown, as the form ofthe central or ribbed part of thebar or blank may be varied somewhat.

These box-nuts are often used as washers,

HENRY W. OLIVER, J R.

Witnesses: JOHN GLENN,

THos. B. KEER. 

